while True:
    first_number = input('请输入一个数字 ')
    if first_number == 'quit':
        break
    second_number = input('请输入一个数字')
    try:
        answer =  int(first_number) / int(second_number)
    except ZeroDivisionError:
        print('你不能输入汉字')
    else:
        print(answer)

